Fifteen-year-old Mikazuki Yuzuki is no stranger to silence.

Blamed for everything, supported by no one—not even her closest friends or family—she drifts through the endless corridors of Kurokawa High like a shadow. When she’s mysteriously locked inside the school after hours, alone and lost, Yuzuki stumbles upon a secret ritual hidden deep within the sprawling, labyrinthine campus.

There, bathed in a mist of dark energy and whispers of forgotten spirits, she witnesses the gathering of supernatural forces — and encounters a ghost boy who defies everything she thought she knew.

As ancient myths unravel and the school’s hidden past comes alive, Yuzuki must confront the darkness that clings to Kurokawa High — and to herself. With no one to trust and nowhere to run, she decides to use the haunting truth to claim the justice she’s always been denied.

Because sometimes, the most powerful ghosts are the ones you carry inside.